GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 879155  Size: SH
  1. Disconnect the evaporative emission (EVAP) purge pipe from the engine purge hose. Refer to Plastic Collar Quick Connect Fitting Service .
  2. Cap or plug the purge pipe and the engine purge hose to prevent contamination.

  3. Object Number: 890000  Size: SH
  4. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  5. Remove the EVAP canister for pipe removal access. Refer to Evaporative Emission Canister Replacement .
  6. Remove the rear brake pipe bracket retaining nuts and release the brackets from the body studs.

  7. Object Number: 49888  Size: SH
  8. Release the pipe retainers (1) from the vehicle underbody.
  9. Remove the purge pipe from the pipe retainers.
  10. Lower the rear of the pipe while moving the pipe rearward slightly, then lower the front of the pipe.
  11. Remove the purge pipe from the vehicle.

Installation Procedure


    Object Number: 49888  Size: SH
  1. Position the purge pipe to the vehicle.
  2. With the rear of the pipe positioned slightly rearward and down, raise the front of the pipe into position.
  3. Install the remainder of the pipe into position.
  4. Install the purge pipe to the pipe retainers.
  5. Secure the pipe retainers (1) to the vehicle underbody.
  6. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 890000  Size: SH
  7. Install the rear brake hose brackets to the body studs and install the rear brake hose bracket retaining nuts.
  8. Tighten
    Tighten the nuts to 10 N·m (89 lb in).

  9. Install the EVAP canister. Refer to Evaporative Emission Canister Replacement .
  10. Lower the vehicle.

  11. Object Number: 879155  Size: SH
  12. Remove the caps or plugs from the purge pipe and the engine purge hose.
  13. Connect the purge pipe to the engine purge hose. Refer to Plastic Collar Quick Connect Fitting Service .